Lining for tube mills or crushing mills containing balls or similar crushing bodies



Jan. 16, 1945. J HlENRlcoT 2,367,464

LINING FOR TUBE MI s OR CRUSHING MILLS CONTAINING BALLS OR SIMILARCRUSHING BODIES Filed Jan. 2, 1940 4' R? L12 T @l; m,

Patented Jan. 16, 1945 LINING FOR TUBE MILLS OR CRUSHING MIILLSCONTAINING BALLS OR SIMILAR CRUSHING BODIES Jacques Fernand Henricot,Court-St.-Etienne,

Belgium; vested in the Alien Property Custodian Application January 2,1940, Serial No. 312,133

In Belgium January 20, 1939 1 Claim.

This invention relates to a lining for tube mills or mills usingspherical balls or similar bodies as crushing agents.

Among the objects is to provide a mill which is strong, durable andefiicient and economical.

The mill is preferably in the form of a drum, the inner wall or innerlining of which is provided with inwardly extending projections adaptedto receive the impact of the balls or other bodies employed, Suchprojections are preferably of high manganese steel, the surface of whichis hardened by repeated impacts. The spacing of the projections and sizeof balls employed is such that the balls strike only the innerprojecting faces of the projections.

Other objects and advantages will appear from the following descriptiontaken in connection with the accompanying drawing wherein:

Fig. 1 is a fragmentary perspective;

Fig. 2 is a view similar to Fig. 1 but showing a modified form ofprojection;

Fig. 3 is a plan View of a portion of the liner with a ball resting onthree of the projections, and

Fig. 4 is a sectional view taken on the'line 4& of Fig. 3.

In the construction shown in the drawing skid of the material is greatlyreduced, so that, when the mill is turning, balls and material to becrushed are carried upwards over a very great area before getting looseand falling from an increased height down on the bottom. Heavier blowsand better production result,

In Figures 1 and 2, projections are portions of fins, such as 5, 6, I,aligned along two perpendicular directions, several of these meeting; inFigure 2, for example, fins 5, 6 and 1 meet each other, the

(Cl. Zak-1.83)

whole of them forming one projection. In Fig. 3, I show a ball l2resting on an edge and corners of fin portions 5.

According to the invention, the different projections aforesaid may beeither cast together with the bottom plate, or assembled on this latter.

The several segments herebefore described and represented are onlyparticular constructional examples of the invention. Severalconstructional modifications may be used without transgressing thelimits of the invention.

What I claim is:

A rotary crushing mill with crushing bodies comprising interiorprojections formed of metal subject to hardening by repeated impact,said projections presenting T-shaped faces in staggered relation withthe upright of the T extending in the direction of rotation of the mill,with their smallest linear dimensions less than the smallest lineardimensions of the crushing bodies, said projections having a distancebetween them which is less than the smallest linear dimension of thecrushing bodies, the height of the projections relative to the bottom ofthe space between them being sufficient to prevent the crushing bodieswhich rest between adjacent projections from coming in contact with thebottom of the space between the projections and the dimensions of thecrushing bodies being such as to permit them to enter substantiallyinto'the space between the projections whereby when the mill is rotated,the crushing bodies will be carried around with the projections asubstantial distance before falling.

JACQUES FERNAN D HENRICOT.

